Revert "PHOENIX-1524 Bump default HBase version to 0.98.8 after PHOENIX-1470"

This reverts commit 5e2c182aad7f1a8ed9d3c5a29240b61b399342d7.
Revert "Amend PHOENIX-1470 KEEP_DELETED_CELLS interface changed in HBase 0.98.8 (Jesse Yates)"

This reverts commit 06bf205ac1c9d4c222652173b58a9429a83630bf.
Revert "PHOENIX-1470 KEEP_DELETED_CELLS interface changed in HBase 0.98.8 (Jesse Yates)"

This reverts commit 9437c044624e41d7e4a72b611cd81749d8d96f02.